#include<bits/stdc++.h>
using namespace std;
#define debug(x) cout << '[' << #x << " is: " << x << "] " << endl;
#define inF freopen("6in.txt" , "r" , stdin);
#define outF freopen("6.txt" , "w" , stdout);
#define imod(a , n) (a % n + n ) % n
#define sor(v) sort(v.begin() , v.end());
#define print(v) for(auto f : v ) cout << f << " " ;
#define rsor(v) sort(v.rbegin() , v.rend());
#define rev(v) reverse(v.begin() , v.end());
#define scan(v)for(auto &it : v)cin >> it ;
#define ll long long
//#define int ll
#define logar(x , y) log(x) / log(y)
#define __sum(n) n * (n + 1) / 2
#define __lcm(a , b) a / __gcd(a , b) * b
#define pii pair<int , int >
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);
const int N = 1e3 + 5 , M = N * 64 , MX = 2e4 + 40;
const ll MOD = 1e9 + 7 , oo = 1e9 + 9 , OO = 1e18 , mod = MOD ;
const double pi = acos(-1) , eps = 1e-17 ;
int di[] = {1 , -1 , 0 , 0};
int dj[] = {0 , 0 , -1 , 1};
int32_t main()
{ //inF;
//inF;outF;
fastio;
int n , m ;
cin >> n >> m ;
vector<ll> v(n * m);
for(auto &it : v)cin >> it ;
ll arr[n][m];
for(int i = 0 ; i < n ; i ++)
for(int j = 0 ; j < m ; j ++)
arr[i][j] = v[i * m + j];
sort(v.begin() ,v.end());
int sz = n * m ;
ll mnans = 1e18 ;
map<int, int > mp ;
int i = 0;
for(int j = i ; j < sz ; j ++){
if(mp[v[j]] )continue ;
mp[v[j]] ++ ;
int en = n ;
ll mn = 1e18 , mx = 0 ;
//if(v[i] != 8 || v[j] != 26)continue ;
for(int c = 0 ; c < m ; c ++){
for(int r = 0 ; r < n ; r ++){
if(arr[r][c] > v[j] || arr[r][c] < v[i]){
en = min(en , r) ;
}
// debug(en)
if(r >= en)mn = min(mn , arr[r][c]) , mx = max(mx , arr[r][c]);
}
// if(v[i] == 8 && v[j] == 26)debug(en)
// debug(en)
}
mnans = min(mnans , max(mx - mn , v[j] - v[i]));
en = n ;
mn = 1e18 , mx = 0 ;
for(int c = m - 1 ; c >= 0; c --){
for(int r = 0 ; r < n ; r ++){
if(arr[r][c] > v[j] || arr[r][c] < v[i]){
en = min(en , r) ;
}
// debug(en)
if(r >= en)mn= min(mn , arr[r][c]), mx = max(mx , arr[r][c]);
}
// if(v[i] == 8 && v[j] == 26)debug(en)
// debug(en)
}
mnans = min(mnans , max(mx - mn , v[j] - v[i]));
}
i = sz - 1;
mp.clear();
for(int j = i ; j >= 0 ; j --){
if(mp.count(v[j]) )continue ;
mp[v[j]] ++ ;
int en = n ;
ll mn = 1e18 , mx = 0 ;
if(v[j] != 10)continue ;
//if(v[i] != 8 || v[j] != 26)continue ;
for(int c = 0 ; c < m ; c ++){
for(int r = 0 ; r < n ; r ++){
if(arr[r][c] < v[j] || arr[r][c] > v[i]){
en = min(en , r) ;
}
// debug(en)
if(r >= en)mn = min(mn , arr[r][c]) , mx = max(mx , arr[r][c]);
}
// if(v[i] == 8 && v[j] == 26)debug(en)
// debug(en)
}
mnans = min(mnans , max(mx - mn , -v[j] + v[i]));
en = n ;
mn = 1e18 , mx = 0 ;
for(int c = m - 1 ; c >= 0; c --){
for(int r = 0 ; r < n ; r ++){
if(arr[r][c] < v[j] || arr[r][c] > v[i]){
en = min(en , r) ;
}
// debug(en)
if(r >= en)mn= min(mn , arr[r][c]), mx = max(mx , arr[r][c]);
}
// if(v[i] == 8 && v[j] == 26)debug(en)
// debug(en)
}
// debug(mn)
mnans = min(mnans , max(mx - mn , -v[j] + v[i]));
}
cout << mnans ;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
208 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
208 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
208 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
